<template>
  <div>
    <div class="search">
      <input v-model="keywrod" class="search_input" type="text" placeholder="输入城市名或拼音" />
    </div>
    <div class="search-content" ref="search" v-show="keywrod">
      <ul>
        <li class="search-item border-bottom" v-for="item of list" :key="item.id"
        @click="handleCityClick(item.name)">{{item.name}}</li>
        <li class="search-item border-bottom" v-show="hasnodata">没有找到匹配项</li>
      </ul>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
export default {
  name:'CitySearch',
  data () {
    return {
      keywrod: '',
      list: [],
      timer: null
    }
  },
  props: {
    cities: Object
  },
  watch: {
    keywrod () {
      if(this.timer) {
        clearTimeout(this.timer)
      }
      if(!this.keywrod) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if(value.spell.indexOf(this.keywrod) > -1 ||
            value.name.indexOf(this.keywrod) > -1)
            {
              result.push(value)
            }
          });
        }
        this.list = result
      },100)
    }
  },
  methods: {
    handleCityClick (city) {
      this.$store.dispatch('changeCity',city)
      this.$router.push('/')
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.search)
  },
  computed: {
    hasnodata () {
      return !this.list.length
    }
  }

}
</script>

<style lang="stylus" scoped>
.border-bottom
  &:before
    border-color #666666
.search
  height .72rem
  padding 0 .1rem
  background #00bcd4
  .search_input
    box-sizing border-box
    padding 0 .2rem
    width 100%
    height .62rem
    line-height .62rem
    text-align center
    border-radius .1rem
    color #666666
.search-content
  z-index 1
  overflow hidden
  position absolute
  top 1.58rem
  left 0
  right 0
  bottom 0
  background #eeeeee
  .search-item
    line-height .62rem
    padding-left .2rem
    background #ffffff
    color #666
</style>
